Corrected ES5506 doc.

doc/7-systems/es5506.md

@@ -50,11 +50,11 @@ sample memory is split into 2MB banks, making the maximum sample length 2097024
 
 the following options are available in the Chip Manager window:
 
-- **Output rate divider**: as the chip mixes more channels, the output sample rate goes down. this selects the appropriate rate for the number of channels in use.
-  - for hardware authenticity, change this to match the number set in "Channels" below.
+- **Output rate divider**: sets the number of channels used in mixing. ranges from the value set in "Channels" below up to 32.
+  - as the chip mixes more channels, its output sample rate goes down, which also affects filtering.
+  - higher output rates (lower dividers) consume significantly more CPU, so even when using fewer active channels, it's best to keep this divider as high as possible. a /22 divider is sufficient for 44100 Hz output.
 - **Volume scale**: allows you to lower the overall volume to prevent clipping/distortion when using too many channels.
 - **Amiga channel volumes**: makes volume linear, from 0 to 64 (40 in hex). used in S3M, XM and IT import.
 - **Amiga-like pitch**: pretends to be an Amiga, with periodic slides. used in S3M, XM and IT import (the latter two when linear slides are disabled).
   - only effective when pitch linearity is None.
-- **Channels**: sets the number of channels that will be active, from 5 up to 32.
-  - for hardware authenticity, set "Output rate divider" above to match.
+- **Channels**: sets the number of channels available in the tracker, from 5 up to 32.